How to use the dice roller
Pick a die (d6 is a normal six-sided die, d20 the twenty-sided die used in Dungeons & Dragons), choose how many to roll and press Roll, or press the space bar. You can also type dice notation: 2d6 means two six-sided dice, 1d20+5 one twenty-sided die plus 5, and 3d8+1d6−2 mixes different dice.
Results come from your browser's cryptographic random number generator, so every face has exactly the same chance. Highest possible rolls are outlined in green, ones in red.
Probabilities with two six-sided dice
With 2d6 there are 36 equally likely combinations. A total of 7 is the most common, which is why it matters so much in games like Monopoly, Catan and craps.
| Total | Combinations | Probability |
|---|---|---|
| 2 | 1 | 2.8 % |
| 3 | 2 | 5.6 % |
| 4 | 3 | 8.3 % |
| 5 | 4 | 11.1 % |
| 6 | 5 | 13.9 % |
| 7 | 6 | 16.7 % |
| 8 | 5 | 13.9 % |
| 9 | 4 | 11.1 % |
| 10 | 3 | 8.3 % |
| 11 | 2 | 5.6 % |
| 12 | 1 | 2.8 % |
Common dice
- d4, d6, d8, d10, d12, d20: the standard polyhedral set used in role-playing games.
- d100 (percentile): a number from 1 to 100, often rolled as two d10.
- 4d6, drop the lowest: a classic way to generate D&D ability scores.
Frequently asked questions
Is this dice roller really random?
Yes. It uses the browser's crypto.getRandomValues with rejection sampling, so each side of every die is equally likely.
What does 2d6 mean?
Roll two six-sided dice and add them up. The result is between 2 and 12, with 7 the most likely.
What is the most likely roll with two dice?
7, with 6 of the 36 combinations (16.7%). 2 and 12 are the least likely at 2.8% each.
Can I roll a die with any number of sides?
Yes, from 2 to 1,000 sides. Type the number in “Sides per die” or use notation such as 1d7 or 3d30.